Drilling-machine.



.0. A. EDEN, la. DRILLING MACHINE. APPLICATION FILED MAY 27, 191-4.

1,66,514, Patented Jan. 4, 1916.

5 SHEETS-SHEET I.

LVVENTOR, I Q747775 J. A. EDEN,'J3.

DRILLING MACHINE? APPLlCATlON FILED MAY 27, 1914.

I 1,166,514. Patented Jan. 4, 1916.

5 SHEETSSHEET 2.

in Al JR.

DRILLING MACHINE.

APPLICATION FILED MAY 27. 1914.

Patented Jan. 4, 1916.

1,166,514. 4 5 SHEETS-SHEET 3.

l a II II J I I 1\ i F 1 4 I] I 1v VENTOR,

I WITNESSES: I Zi za /1,2;

J. A.-EDEN JR. DRILLING MACHINE.

APPLICATION FILED MAY 27, 1914.

TTOEY.

Patented Jan. 4, 1916.

5 SHEETS-$HEET 4 WITNESSES:

J. A. EDEN, JR. DRILLING MACHINE. APPLICATION FILED MAY 27, I9I4'.

Patented Jan. 4, 1916.

5 SHEETS-SHEET 5.

k m \ww WITNESSES:

' JAMES A. nnnn, an,

MACHINE TOOL COMPANY, A. CORPORATION OF SPRING-FIELD, MASSACHUSETTS,ASSIGNQR- T9 BAUSCH OF MASISACHUSETTS- DRILLING-MACHINE.

Specification of Letters Patent.

Patented. Jan. 4:, 191%.

Application filed May 27, 1914. Serial 1%. 841,226.

To all whom it may concern: Be it known that 1, JAMES A. EDEN, J r., acitizen of the United States, residing in Springfield, Massachusetts,have invented certain new and useful Improvements in Drilling-Machines,of which the following is a specification. This invention relates tomachines for automatically forming holes or sockets in bolts andsimilar. articles, by the process of having a series'of the blanksengaged successively by a set of drills or similar tools, whereby thedesired form of hole or opening is formed by a sequence. of operations;which results are produced by the machine without attention on the partof an operator, further than to present the blanks at a certain place inthe proper stage in the operation; or to provide means whereby theblanks are automatically fed tothe machine,

. and removed from the same after they have been operated upon.

A furtherobject of the invention is to provide means'ivhereby in theoperation of the machine, each blank receives a series of operationsupon its bore, by a series of tools or drills, that willproduce a formof bore or hole in the finished blank whose diameter decreasesprogressively or by steps from the upper portion to the bottom of thehole.

Anotherobject of the'invention is to pro- .vide improved means Iorreceiving and clamping the blanks on a carrier member, for presentingthem successively to the several drills or tools in the proper position,and for releasing the finished blanks after engagement with the severaltools, for the removal of the blank and the insertion of the freshblanks. y

For these purposes the invention comprises various combinations andsub-combinations of mechanism as claimed.

.In the accompanying drawings, showing oneembodiment of my invention:Figure 1 is a ,plan new of the machine; Fig. 2 1s a side elevation;'Fig.3 is a section enlarged on the line 3-3 of Fig. 2; Fig.4 is a brokensection enlarged on.the line 4-4 of Fig. 2; Fig. 1* is a 'plan of thecam in the initial positicn; Fig. 5 is a section enlarged on the line5-5 of Fig. 2; Fig. 6 is a partial vertical section on the line 6-6 ofFig. 4.-; Fig.

hereinafter and 8 from the shaft 7 a similar view on the line7- 7 of 1;Fig. 8 is a cross section, enlarged, on the line 8-8 of Fig. 2; Fig. 9is a section on the line 9--9 of Fig. 6; Fig. 10 is a plan view of thecam .member, and its supporting parts; Fig. 11 shows the head indexingcam; Fig. 12 is a view showing diagrammatically the several drills ortools and the blank, indicating the relative size and positions of theseparts; Fig. 13 is a view showing a development in a plane of the cam forthe blank holder; Fig. 14 is a cross section on line lt-l l of Fig. 2;Fig. 15 is a cross section on line 15-15 of Fig. 6

In the several views, the machine is shown as having a standard S, thatat the upper portion carbase B and an upright frame or 3, 3, that isdriven b a pulley 4; and a worm 5 on a short sha "t 6 driven by gears 72,-engages a worm wheel 9 fast on an upright cam shaft 10 supported insuitable bearings in the standard 8, as shown in Figs. 1 and 2.

A hollow vertical shaft 12 is mounted in a step bearing 13 and supportedby a hearing arm 14: at its upper portion, which arm is secured to thestandard S; the purpose of this shaft being to support 'a head thatreceives and grips the blanks to-beoperated upon by the set '01 tools.This head is shown, particularly in Figs. 2, 6 and 7, as formed by anupper disk 16 both keyed on the hollow shaft 12 as shown in Fig. 7,androtated therewith. The disk 16 is provided with a sleeve extension1'2 extending downwardly around the shaft 12 to which shaft both of thedisks are secured for rotation therewith; which ex- ,tension 17 hasadjustably secured thereto a bearing member18 for a. thrust-bearing of aball type, the balls 19 engaging a race ring 20 that presses againstthebearing arm 14, by reason of aafter set forth. The said disk 15 isprovided with a series of radial slots 21, f which are shown equallyspaced apart, for receiving the upper end portions of the blanks b, andabove each of these slotted portions is. secured. in the disk astationary cup member 22, of annular form having a central open in 23 ofsufiicient size to receive the largest drill or tool, that passesthrough such opendisk 15, and a lower,

thrustthatgwill be hereinend of the blank; such' to engage the upper cupmembers being shape with radial ing at the proper stage substantially of.conical ribs to tightly grip the upper end of the blank, but at theinner portion 24 nearest the axis of the supporting shaft, the cupmember is substantially cylindrical, for the purpose of properlycentering the blank in the cup member to bring the central opening forthe drill at the axis of the blalik.

The lower disk member 16 is provided with a circular series of movablecup mem: bers, arranged in alinement vertically with the eight cupmembers 22 member of the head; and these cup members 25 comprise a framehaving an outer forked portion 26 that swings on pivots 27, so that theinner free end of the member can swing up and down, and which endportion of each member is provided with a bearing roller 28, all ofwhich ride on a cam 29 of crown type; this cam shown in plan in Fig. 10and in development in a plane in Fig. 13 has its major portion a flat soas to hold the blank clamped in one position through the severalstations which it occupies while being drilled. At the rear end of theportion a of the cam it is cut away as indicated at c to permit thedropping of the lower cup member and discharge of the drill ashereinafter described. The cup member is then lifted on the next portion6! of the cam and passes thence up an abrupt rise e onto a small rise hwhich carries it up to the level of the main portion a of the cam. Theseswinging cup members 25 are shown as each provided with an annularsocket in a bore in the frame and normally pressed upward by a spring 31against a stop flange 32 at the top of the bore. The socket portion 30has its upper face coneshaped and provided with radial ribs to grip theend of a cylindrical blank 6," and at the bore of the annular socketportion is arranged a plunger 33 pressed upward by a spring 34 thatengages a flange'35 on the plunger and causes above the socket theplunger to be lifted a short distance when first fed into the cupmember, the plunger retreating when the cup memberis swung upwardly bythe described cam, that will cause the upper end of the blank I) toenter the upper cup' member 22, whereby the blank will be grippedbetween the pair of cooperating cup members when the roller on theswinging cup member reaches the highest portion or dwell a of the cam,as indicated at the left hand portion of Figs. 6 and7. The blanks b arefed to the head at a point where the cam portion 05 is the lower cupmembers, as indicated at the right hand portion in Figs. 1, 2 and 7 andwhich corresprnds to the position 36 of the cam as indicated in Fig. 10.Any desired form of blank feeding means can be arof the upper erectposition. in member for engagement by the latter, 1 proportion 30vertically slidable engaged by the roller of one of meagre ranged tofeed the blanks b at this place, a hopper 37 being shown at this feedingposition, that is provided with a swinging carrier 38 that will select asingleblank and when the slide 39 is elevated, the carrier 38 that ispivoted on the slide brings a stop 40 thereon to engage a lug 41 to tiltthe carrier and cause a blank thereon to slide downward as indicated inFig. 7 whereby the blank will enter the slotted portion 42 of the lowerhead 16 and striking the inner vertical wall of SllCh slot will bedirected into the cup member, now in its depressed position. For thepurpose of bringing the now inclined blank 5 as indicated in Fig. 7, tothe line with the upper cup vide a swinging arm 43 pivoted at 44, whichin its full line position, as indicated in Fig. 7, will act as a supportand guide for the blank 6; and which when swung to the positionindicated by broken lines in this figure will shift the blank to theerect position as shown in broken lines in this view, and retain theblank in such position until the advance of the head and cup members-will cause the roller 28 to mount the incline e of the cam, therebyraising the blank to bring its upper end portion into the socket or cupmember 22 of the upper disk: the end portion 43 being laterally extendedin a curve (Fig. 4) concentric with-themovement of the head to retainthe blank in this position of alinement until it starts to enter theupper cup member. The arm 43 is normally held in the position indicatedin broken lines in Fig. 7, and .in full lines in Fig. 2,by a weight 43"on its free rear extremity that is elongated and overbalances theportion 43' (see Fig. 2); the arm 43 normally resting on a pin 45 onvthe hopper slide 39, and when the slide is in its normal depressedposition the; weighted arm will hold the portion 43 in the broken lineposition of Fig. 7 but vated, this portion of the arm will be raised,and the blank engaging portion43 will be moved slightly away from. thehead to the.

shaft 46 is mounted at the lower. part of the machine rotated from thevertical shaft 10 by gears 47 and 48 to revolve at the same speed as thevertical shaft; the shaft 4? carrying a crank 49 (Figs. 5 and 14) whosepin 50 rides in a slotted lever 51, and a link when the slide 39 isele-' alining with the 52 connects the lever 51 with the slide 39, at ayoke 52 on the bottom of the slide; by which means the slide 39 will beelevated to raise the carrier 38 having and the latter will be tilted todischarge the blank b into the cated in Fig. 7, atthe proper stage inthe 1ndexing around of the head. As soon as this blank is discharged asshown in this figure, the slide is depressed, which will permit meweighted arm to fall, causing the portion 43 to shift the blank to theupright position, and retain the blank in this position as the head ismoved around, raises the lower cup member blank.

' The means for indexing the head around from the main operating shaft10, are shown as comprising a disk 53 fast on the lower ortion oftheshaft 12 and provided with ding to the eight and vthe cam to grip theeight notches 54 correspon pairs of cup. members on these notches aresuccessively engaged by a pawl 55 pivoted on the end of an arm 56 thatswings loose on'the shaft 12 and which is oscillated by a. rod 57pivoted at one end on-the arm 56, the other end of the rod 57 having aslotted part 58 embracing the shaft 10 and carrying a roller 59 that ispressed againstthe periphery of acam 60 fast on the shaft 10, the rollerbeing held against this cam by means of a spring 61 having one endsecured to the arm 56 and its other end fastened to a suitable pin 62 onthe base. When this cam draws the arm 56 toward it, the pawl 55 will bemoved in the same d rection and its-extremity 63 will be retained in theengaged notch byspring 64; and th s cam will serve to swing the arm 56the'limit of movement caused by this cam; and the cam on furtherrotation permits the arm 56 to be retracted by the spring 61, when thepawl will ride out of the notch moved for a distance corresponding tothe distance apart of the notches to engage the next notch 54, so thatfor each revolution of the shaft 10 the disk 53 is advanced oneeighth ofa revolution, which Wlll serve to bring the next pair of, cup members onthe head to the feeding position, and retain them in such position for acertain period of time. In order to lock the head in these positions ofrest, a spring plunger 65 is mounted on the base to engage the notches54 in the disk, and a lever 66 pivoted to this spring plunger, has itsend portion 67 forked over the rod 57 so as to engage a stop 68-on therod 57, which parts are so positioned that on the advance of the slideto cause the pawl to swing the disk, the stop 68 will a the spring plun-54, releaslever and shift ger 65 out of its engaging notch ing the disk;and as soon as the -gins its return movement the spring plunger isreleased to return to former position swing this a blank therein,

holders on the head as mdithe shaft; and

' head which supports the blanks.

as provided other arm 89 connects with slide beand engage thetoregistering position with the spring plunger each time the disk isadvanced.

Above the head that contains the described eight holders, comprising theopposed pairs of cup members that receive and rip the blank I), isarranged a carrier on which is mounted a set of tools ordrills arrangedto register with the opening or bore of the cup members 22, whereby uponcausing rotation of the drills, and bringing the carrier and headtogether, the drills will penetrate these openings to operate upon theupper endsof the blanks in the holders. A suitable bracket 69 carried bythe standnext notch, that is brought ard S at the upper part of themachine, is

provided with bearings 70 and 71 in which latter slides a sleeve 72, andis splined as indicated at 73 (Fig. 3) to prevent rotation of thesleeve; and a shaft 7 4 isrotatablein the bore of the sleeve 7-2, thisshaft also rotating in the bearing7 0, and extending down below thesleeve, as shown in Fig. 6,to project into the tubular shaft 12 thatcarries the The sleeve 72 supports a carrier in the form of a. disk 75that is secured thereto, and on which are 77 that correspond in positionto the cupv members on the head, and are so arranged that each time thehead is indexed and brought to rest, the drills 76 in the holders willregister with the openings inthe upper cup members 22; the holders beingshown with grip-ping means at their form of blocks 78 and 79 that arepressed against the drills 'by screws 80 and 81 respectively to lock thedrill and prevent its rotation; while the uper end of the drill 76 ispositioned and locked by a set screw 82 of the usual form, that willregulate the depth of the opening formed by the drill. Each drill holderis. shown as carrying a gear 83 at the intermediate portion, all ofwhich mesh with a gear 84 fast to the interior shaft 74:; and this shaftat its upper end is provided with a miter gear 85 loosely splinedthereon for driving engagement with this shaft, but permitting endwisemovement of the shaft; which gear 85 meshes with a miter gear 86' faston the end of the driving shaft 2, by which means the drill holders orspindles are continuously driven from the driving shaft, and duringendwise movement of the shaft 71 and the carrier 75' thereon.

Means 'are provided 'for moving the carrier 75 toward and from the blankcarrying lower portions in the head. A bent lever pivoted at 87 has onesleeve 72, while the a slide 90 guided in a bracket 91; which slide hasasl'otted portion 92 surrounding the operating shaft 10, with a roller93 on the extremity arranged to engage arm 88 connected to the theperiphery of a cam 9- arranged a circular series of drill holders tillsecured on the shaft 10, see Fig. 4:. To retain this roller engaging thecam, and to talite up all lost movement, one or more springs 95 have oneend attached to the carrier 85, with the upper end secured to the frame,the tension of which springs will thus draw the carrier upward andthrough. the bent lever will press the roller on the slide continuallyagainst the edge of the cam 94. As shown in Fig. l, the cam 94: hasancccentric portion engaging the roller from the point 17?, around tothe point at, during which period of the revolution of the operatingshaft 10,

the drill carrier is advanced slowly downward, and the drills being inengagement With the blanks respectively will form or enlarge a.previously formed opening in the upper end of the blank. and it will beobserved that this portion of the cam. extends for slightly more thanhalf of its circumference. The continued revolution of the cam ill willcause the roller to leave this highest portion, and the springs 95constantly pressing the roller 93 toward the center of the earn, willnot move the roller to the position a (Fig. 4?) by a rapid movement ordrop on the cam surface; which will swing the bent lever and permit thedrill. carrier 75 to be quickly elevated, withdrawing the drills fromthe blanks in the head. From the point 8 around to the point t on thiscam, the surface is concentric and the drill head will be heldstationary, during which time the head that carries the blanks will beindexed around the unit distance; said point m is a on the cam that asufficient distance to bring the drills there in adjacent the severalblanks in the holders and, as just described, the drills will be slowlyadvanced as the roller travels from the point m around to point 72..

Referring again to Fig. 5, and also Fig. 11, showing the cam 60 thateffects the in dexing of the head the turning of this cam in thedirection indicated by the arrow will shift the roller 59 from thelowest position by m on the cars to highest position play a rather quickmovement, thereby positively advancing the rod 57 and the arm 56; whichlatter will swing the pawl that one of the notches 5t, and the pawlbeing retained in the notch by the spring 64.- will carry the disk 53around in the direction indcated by the arrow, for a unit distance andadvance the cup members a distance equal to their distance apart. Thecontinued revolution of the cam 60 in the direction indicated, willcause the roller to travel around from the point 3 to the point axis ofthe cam than the point g ,.so that the spring 61 will cause the arm'56and rod 57 to slowly advance or return in the opposite direction to thearrow on the dish 53 and the inclined end face of the lug 63 on the pawlcomparatively quick; rise while from this point i to the will lower thedrill carrierengagese that is nearer themeagre will. cause it to moveout of the notch 54 that it engaged during the advance of the dish: 53,.and the pawl will ride along the edge of the now locked disk 53 until itreaches the next notch 54-,into which it will be drawn by the spring 64.'The drop in the can]; 68 between these two points 3/ and a iscoinparatively slow so that the return will. be a slow movement untilthis point z is engaged. by the roller, but from this point to thestarting point a" is a steep incline so the latter'portion of the returnmovement oi the pawl will be accelerated.

The stop 68 is so placed on the slide 57 that only at the latter portionof the return movement of the arm and slide will the step strike thelever 66 to force the spring plunger out of its engaging notch. 54%; andwhich is efie'cted at the time when the pawl lug 63 is forced into thenotch 54;, so that the dislr 53 will be lockedyduring the returnmovement of the pawl and prevented from displacement; from Whicharrangement it follows that at the beginning of the stroke of the arm 56and pawl 55, the plunger 65 will be held out of the registering notch,but the stop 68' Will at once release the lever 66 as soon as the notch5 lhas passed beyond the registering position and the plunger 65 willreturn to engage the edge ofthe disk 53, and will ride on the same untilat the latter por tion of this movement the next notch. will be broughtto the plunger, into which the plunger will be forced by its spring 65.

The can: 94 that moves the drill. carrier up and down is so positionedon the operating shaft 10 relative to the location of the cani- 60 alsofast on this shaft, whereby the roller 59 will travel from. the positionat to the po sition y that causes a forward step of the head, at thestage of the revolutionof this shaft 10 when the roller 93 is travelingfrom. the point a to the point t, and the drill can rier 'is retained inits elevated position with the drills entirely free from the head thatcarries the blanks.

As has been set forth, the blanks Z fed to the holders composed of theopposed cup members, at a position indicated by in Fig. 10, when a pairof cup members is opposite the feeding hopper 3'2 and it will be seen.from Fig. 4L- that there is no drill spindle adjacent this position onthe head. but a drill spindle or holder 77* is located in verticalalinement with the position of the next pair of cup members in the headthat is is advanced an angular distance of it F63 {i5 degrees on thehead; and it will also be 77, 37177", are located the same distanceapart around the drill carrier with the other parts of head. When theblank ll indicated in dotted lines in Fig. 4L- it will have been actedupon by the five drill and alining cup members on the arrives at thepoint upwardly, and by a series of steps; and it will be also seen thateach one of these steps or portions ofthe bore will be formed by aseparate operation, the four drills operating at the sametime ondifl'erent blanks. The machine will thus automatically receive theblanks from a suitable feeding device, or from an operator, will gripthesame in the holders, and will automatically cause them to be operatedupon in sequence by the drills and will eject the finished blanks fromthe machine; and'a number of the blanks will be simultaneously engageddrills, so that the operation is comparatively rapid, as at each advanceof the holders a finished blank is ejected, and at the same time a freshblank is received. By having the arrangement of a series of: drillsincreasing in length in the order of their engagement with the blank,and at the same time decreasing in diameter, a bore is formed in theblank of'steppedconstruction.

The feeding device is not separately claimed in this application, but anapplication for patentfor such construction is file of even dateherewith.

The machine has been primarily designed, constructed and used for thedrilling of tell tale stay bolts, that is those employed as thefastenings between the inner MIC bers and will be in position fordischarge.

This position is indicated at the right hand side of Fig. 6. WVhen a cupmember arrives at this position the roller comes to the cut 5 awayportion of the cam 29 and the arm 26 swings down to the position shownin dotted lines striking against a spring stop 96. The bolt 1) dropsinto the discharge chute 97. This notch or opening 0 in the cam alsopro- .vides a convenient way for the discharge of the chips and oilwhich are caught by the crowned cam. The stop 96 is an arm mounted onthe bracket 14 as shown in Figs. 4 and 8 and having its end curvedinward to act as a cam to swing the arm 26 inward as the latter isadvanced 'beyond the discharging position. By this means thecup memberis lifted to bring its roller in position to rest on the portion al ofthe cam 29 when said cup member passes beyond the end of the stop or cam96. From the discharging position 11 around to the position 36 (Fig.10), which is a quadrants distance, no drill spindles, are arranged inthe head, for the reason that no blanks will .be held in the carriers;but as each carrier arrives at '-.the position 36, it will receive ablank from the described feeding device, or other source at this place.

In Fig. 12 the described five drill holders are shown as arranged in aplane, instead of a circle as they are located on the head, and it willbe seen that the holder 77* that first alines the blank I), is providedwith a tool 771 that iscomparatively short and more in the form of acounterboring tool; the length of this tool in the holder being suchthat when the drill carrier is brought down its full distance, this toolwill merely form a shallow notch or opening in the end of the blank;.and which is for the purpose of properly centering the drill in thesucceeding operation. The next drill holder 77 is provided with a drill772, that may be of the twist drill type and whose length is somewhatgreater than that of the tool 771, but which will form only a short holeor opening in the blank. At'the next operation the blank I) will beengaged by the third drill 773, whose length is slightly greater thanthepreceding drill, but whose diameter is somewhat less than that of thedrill 772; whereby the hole in the blank will be somewhat deepened, butthe bore formed by the operation of this drill will be less than thatmade by the drill 772. The next drill 7?4.- is of greater length thanthe drill 773, but of less diameter. The fifth drill 7 7 'is stilllonger than the preceding drill 774i, and has its diameter slightlyless. It will thus be understood that these four drills 772. 7'73, 774,775, will form an opening or bore in the blank I) of a length or depthequal to that of the drill 775,

but such opening will increase in diameter from the lower portionleakage theret-hrough, the breakage of any of such bolts, therebyshowing to the boiler inspector or other person concerned where boltreplacements are necessary; but it or material parts of it may beemployed with other tools than drills and upon other styles of blanksthan the one described and for the producing of various other products.And

though I have descr bed with great particuing this invention. yet it isnot to be understood therefrom that the invention is restricted to theparticular apparatus illustrated. Various modificationsthereot in detailand in the arrangement of the parts may be made within the scope of theappended claims by'those skilled in the art without departing from theinvention.

What I claim is- 1. In a machine of the" class described a blank carrierincluding a pair of clamping devices adapted to engage the opposite endsof a blank and toexert a pressure toward each other so as to hold theblank, at least one of said clamping devices having an inner face'whichis partly cylindrical and partly conical so as to center the clampingdevices arepressed against it.

2. In a machine of the class described a blank carrier including a'pairof clamping devices adapted to engage the opposite ends of a blank andto exert a pressure toward each other so as to hold the blank, at leastone of said clamping devices being aperouter walls of boilers and whichindicate, by

larity of, detail a specific machine embodythe blank when by as manyarranged to press the arranged to press blank toward tured to admit adrillto engage the end of the blank and having an inner face which ispartly cylindrical and partly conical so as 'tlo centerthe blank withrespect to the dril i 3. In a machine of the class described a head andseries of blank holders carried thereby, each of said blank means forautomatically causing approach and recession of the cup-members toengage and release the blanks, one of the cup-members having a springplunger at the center blank-toward the other cnp member.

4.111 a machine of the class described a head and a series of blankholders carried thereby, each of said blank holders coinprising a pairof opposed cup-members, and means for automatically and recession of thecup-members to engage and release the blanks, one of the cup-mom hershaving a spring plunger at the center the blank toward the other andhaving also a spring supportion arranged to press the the opposedcupmembe'r.

5. In a machine of the class described a vertical shaft having a camthereon, a head rotatable on a vertical axis, a series of blank holdersequally spaced on the head, means connecting said cam with said head toturn the head at each rotation of the-cam shaft a distance equal to thedistance apart of said holders on the head, a carrier on the cup-member,ported socket machine arrange-d abovethe head and mov-' able to and fromthe head, a set of tools on the carrier positioned corresponding to thearrangement of the holders on the head, a second cam on the saidvertical shaft, a slide guided on the machine to reciprocate to and fromthe latter cam, lever connecting the slide with the carrier, one or moresprings connected with the carrier to retract it from'the head and toretain the slide in engagement with said cam, whereby the carrier isreciprocated from the cam shaft between successive turningmovements ofthe head. I c

6. In a device of the type set forth, the combination with a toolcarrier provided with a series of tools and. means for operating thesame, of a movable head provided with a series of blank holders equallyspaced corresponding to the location of the tools for engagementtherewith, each blank holder comprising an upperfixed cup member, and alower swinging :cuomember movable to and from the same to receive andclamp a blank between said members, and a stationar' cam member adjacentthe lower cup member arranged to engao'e the same to elevate eachcop-member as it'passes beyond a predetermined feeding position, tothere'- npon retain the cnpmeznber closed onvthe holders compris mg apair of opposed cup-members, and.

causing approach holder comprising an upper fixed cap member, and alower swinging cupmember movable to and from the same to receive andclamp a blank between said members, and a. stationary cam memberadjacent the lower cnpmembers arranged to engage the same to elevateeach cup-member as it passes beyond a predetermined feeding position, tothereupon retain the cup-member close on the blank during a portion ofits movmerit, and to finally release the cup-member at the latter partof the'movement to permit removal of the blank. and insertion of anotherblank, a movable a-rma-rranged mediate of the two cooperating cup-metahere as brought to the feeding position with the lower cup-memberdepressed to receive the blank, and means for said arm to advance theblank to a, position aiming with said members and to retain it in saidposition as the lower cup-member is closed on the blank. v 8. In adevice of the type forth, the combination with a tool carrier providedwith a series of tools and means for oper ating the same, of a, movablehead provided with series of blanl: holders equally s lacedcorresponding to the location of the tools for engagement therewith,each blanl: holder comprising an upper fixed cup-member, and

a lower swinging cnp-member movable to and from the some to receiveclamp a blank between said members, and a stationary cam member adjacentthe lower one members arranged to engage the same whereby these memberswill rise and :t'all at proper stages, each lower cup member comprisinga spring supported annular seat portion for engagingthe margin of theblank, and a spring plunger at the center of the annular portionarranged to engage the center of th blank.

' 9. in a device of the combinationwith a too carrier, provided with aseries of tools, and means for operating the same, and means for feedingblanks at certain perio s, of a movable head provided with a. series ofblank holders spaced corresponding to the tools on the car-- type setforth, the

ris-r, each blank holder comprising an opp-er lined member and a lowerswinging oppos d member, means adjacent th lower swin member arranged tocause it to rise a i fall at certain stages in the movement the headwhereby the members are lowered as brought opposite the feeding means toreceive the blank, and are raised' beyond such position to grip theblank, and a movable arm arranged at the feeding position intermediateofthe two holder members and provided with means for shifting said armto advance the blank when received by the lower member, to a positionalining with the upper member to be clamped in such 10 position forengagement with the tools.

In witness whereof, I have hereunto signed my name in the presence oftwo sub scribing witnesses. v

I JAMES A. EDEN, JR. Witnesses:

DAVID MCCOMBE, Gno. V. Ctm'rls.

